bootloader/main-pp.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 by Barry Wardell
  11  *
  12  * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing
  13  * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include "config.h"
  28 #include "common.h"
  29 #include "cpu.h"
  30 #include "file.h"
  31 #include "system.h"
  32 #include "kernel.h"
  33 #include "lcd.h"
  34 #include "font.h"
  35 #include "storage.h"
  36 #include "adc.h"
  37 #include "button.h"
  38 #include "disk.h"
  39 #include "crc32-mi4.h"
  40 #include <string.h>
  41 #include "power.h"
  42 #if defined(SANSA_E200) || defined(PHILIPS_SA9200)
  43 #include "i2c.h"
  44 #include "backlight-target.h"
  45 #endif
  46 #if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200)
  47 #include "usb.h"
  48 #include "usb_drv.h"
  49 #endif
  50 #if defined(SAMSUNG_YH925)
  51 /* this function (in lcd-yh925.c) resets the screen orientation for the OF
  52  * for use with dualbooting */
  53 void lcd_reset(void);
  54 #endif
  55
  56 /* Show the Rockbox logo - in show_logo.c */
  57 extern int show_logo(void);
  58
  59 /* Button definitions */
  60 #if CONFIG_KEYPAD == IRIVER_H10_PAD
  61 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  62
  63 #elif CONFIG_KEYPAD == SANSA_E200_PAD
  64 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  65
  66 #elif CONFIG_KEYPAD == SANSA_C200_PAD
  67 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  68
  69 #elif CONFIG_KEYPAD == MROBE100_PAD
  70 #define BOOTLOADER_BOOT_OF      BUTTON_POWER
  71
  72 #elif CONFIG_KEYPAD == PHILIPS_SA9200_PAD
  73 #define BOOTLOADER_BOOT_OF      BUTTON_VOL_UP
  74
  75 #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
  76 #define BOOTLOADER_BOOT_OF      BUTTON_MENU
  77
  78 #elif CONFIG_KEYPAD == PHILIPS_HDD6330_PAD
  79 #define BOOTLOADER_BOOT_OF      BUTTON_VOL_UP
  80
  81 #elif CONFIG_KEYPAD == SAMSUNG_YH_PAD
  82 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  83
  84 #elif CONFIG_KEYPAD == SANSA_FUZE_PAD
  85 #define BOOTLOADER_BOOT_OF      BUTTON_LEFT
  86
  87 #endif
  88
  89 /* Maximum allowed firmware image size. 10MB is more than enough */
  90 #define MAX_LOADSIZE (10*1024*1024)
  91
  92 /* A buffer to load the original firmware or Rockbox into */
  93 unsigned char *loadbuffer = (unsigned char *)DRAM_START;
  94
  95 /* Bootloader version */
  96 char version[] = APPSVERSION;
  97
  98 /* Locations and sizes in hidden partition on Sansa */
  99 #if (CONFIG_STORAGE & STORAGE_SD)
 100 #define PPMI_SECTOR_OFFSET  1024
 101 #define PPMI_SECTORS        1
 102 #define MI4_HEADER_SECTORS  1
 103 #define NUM_PARTITIONS      2
 104
 105 #else
 106 #define NUM_PARTITIONS      1
 107
 108 #endif
 109
 110 #define MI4_HEADER_SIZE     0x200
 111
 112 /* mi4 header structure */
 113 struct mi4header_t {
 114     unsigned char magic[4];
 115     uint32_t version;
 116     uint32_t length;
 117     uint32_t crc32;
 118     uint32_t enctype;
 119     uint32_t mi4size;
 120     uint32_t plaintext;
 121     uint32_t dsa_key[10];
 122     uint32_t pad[109];
 123     unsigned char type[4];
 124     unsigned char model[4];
 125 };
 126
 127 /* PPMI header structure */
 128 struct ppmi_header_t {
 129     unsigned char magic[4];
 130     uint32_t length;
 131     uint32_t pad[126];
 132 };
 133
 134 inline unsigned int le2int(unsigned char* buf)
 135 {
 136    int32_t res = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
 137
 138    return res;
 139 }
 140
 141 inline void int2le(unsigned int val, unsigned char* addr)
 142 {
 143     addr[0] = val & 0xFF;
 144     addr[1] = (val >> 8) & 0xff;
 145     addr[2] = (val >> 16) & 0xff;
 146     addr[3] = (val >> 24) & 0xff;
 147 }
 148
 149 struct tea_key {
 150   const char * name;
 151   uint32_t     key[4];
 152 };
 153
 154 #define NUM_KEYS (sizeof(tea_keytable)/sizeof(tea_keytable[0]))
 155 struct tea_key tea_keytable[] = {
 156   { "default" ,          { 0x20d36cc0, 0x10e8c07d, 0xc0e7dcaa, 0x107eb080 } },
 157   { "sansa",             { 0xe494e96e, 0x3ee32966, 0x6f48512b, 0xa93fbb42 } },
 158   { "sansa_gh",          { 0xd7b10538, 0xc662945b, 0x1b3fce68, 0xf389c0e6 } },
 159   { "sansa_103",         { 0x1d29ddc0, 0x2579c2cd, 0xce339e1a, 0x75465dfe } },
 160   { "rhapsody",          { 0x7aa9c8dc, 0xbed0a82a, 0x16204cc7, 0x5904ef38 } },
 161   { "p610",              { 0x950e83dc, 0xec4907f9, 0x023734b9, 0x10cfb7c7 } },
 162   { "p640",              { 0x220c5f23, 0xd04df68e, 0x431b5e25, 0x4dcc1fa1 } },
 163   { "virgin",            { 0xe83c29a1, 0x04862973, 0xa9b3f0d4, 0x38be2a9c } },
 164   { "20gc_eng",          { 0x0240772c, 0x6f3329b5, 0x3ec9a6c5, 0xb0c9e493 } },
 165   { "20gc_fre",          { 0xbede8817, 0xb23bfe4f, 0x80aa682d, 0xd13f598c } },
 166   { "elio_p722",         { 0x6af3b9f8, 0x777483f5, 0xae8181cc, 0xfa6d8a84 } },
 167   { "c200",              { 0xbf2d06fa, 0xf0e23d59, 0x29738132, 0xe2d04ca7 } },
 168   { "c200_103",          { 0x2a7968de, 0x15127979, 0x142e60a7, 0xe49c1893 } },
 169   { "c200_106",          { 0xa913d139, 0xf842f398, 0x3e03f1a6, 0x060ee012 } },
 170   { "view",              { 0x70e19bda, 0x0c69ea7d, 0x2b8b1ad1, 0xe9767ced } },
 171   { "sa9200",            { 0x33ea0236, 0x9247bdc5, 0xdfaedf9f, 0xd67c9d30 } },
 172   { "hdd1630",           { 0x04543ced, 0xcebfdbad, 0xf7477872, 0x0d12342e } },
 173 };
 174
 175 /*
 176
 177 tea_decrypt() from http://en.wikipedia.org/wiki/Tiny_Encryption_Algorithm
 178
 179 "Following is an adaptation of the reference encryption and decryption
 180 routines in C, released into the public domain by David Wheeler and
 181 Roger Needham:"
 182
 183 */
 184
 185 /* NOTE: The mi4 version of TEA uses a different initial value to sum compared
 186          to the reference implementation and the main loop is 8 iterations, not
 187          32.
 188 */
 189
 190 static void tea_decrypt(uint32_t* v0, uint32_t* v1, uint32_t* k) {
 191     uint32_t sum=0xF1BBCDC8, i;                    /* set up */
 192     uint32_t delta=0x9E3779B9;                     /* a key schedule constant */
 193     uint32_t k0=k[0], k1=k[1], k2=k[2], k3=k[3];   /* cache key */
 194     for(i=0; i<8; i++) {                               /* basic cycle start */
 195         *v1 -= ((*v0<<4) + k2) ^ (*v0 + sum) ^ ((*v0>>5) + k3);
 196         *v0 -= ((*v1<<4) + k0) ^ (*v1 + sum) ^ ((*v1>>5) + k1);
 197         sum -= delta;                                   /* end cycle */
 198     }
 199 }
 200
 201 /* mi4 files are encrypted in 64-bit blocks (two little-endian 32-bit
 202    integers) and the key is incremented after each block
 203  */
 204
 205 static void tea_decrypt_buf(unsigned char* src, unsigned char* dest, size_t n, uint32_t * key)
 206 {
 207     uint32_t v0, v1;
 208     unsigned int i;
 209
 210     for (i = 0; i < (n / 8); i++) {
 211         v0 = le2int(src);
 212         v1 = le2int(src+4);
 213
 214         tea_decrypt(&v0, &v1, key);
 215
 216         int2le(v0, dest);
 217         int2le(v1, dest+4);
 218
 219         src += 8;
 220         dest += 8;
 221
 222         /* Now increment the key */
 223         key[0]++;
 224         if (key[0]==0) {
 225             key[1]++;
 226             if (key[1]==0) {
 227                 key[2]++;
 228                 if (key[2]==0) {
 229                     key[3]++;
 230                 }
 231             }
 232         }
 233     }
 234 }
 235
 236 static inline bool tea_test_key(unsigned char magic_enc[8], uint32_t * key, int unaligned)
 237 {
 238     unsigned char magic_dec[8];
 239     tea_decrypt_buf(magic_enc, magic_dec, 8, key);
 240
 241     return (le2int(&magic_dec[4*unaligned]) == 0xaa55aa55);
 242 }
 243
 244 static int tea_find_key(struct mi4header_t *mi4header, int fd)
 245 {
 246     unsigned int i;
 247     int rc;
 248     unsigned int j;
 249     uint32_t key[4];
 250     unsigned char magic_enc[8];
 251     int key_found = -1;
 252     unsigned int magic_location = mi4header->length-4;
 253     int unaligned = 0;
 254
 255     if ( (magic_location % 8) != 0 )
 256     {
 257         unaligned = 1;
 258         magic_location -= 4;
 259     }
 260
 261     /* Load encrypted magic 0xaa55aa55 to check key */
 262     lseek(fd, MI4_HEADER_SIZE + magic_location, SEEK_SET);
 263     rc = read(fd, magic_enc, 8);
 264     if(rc < 8 )
 265         return EREAD_IMAGE_FAILED;
 266
 267     printf("Searching for key:");
 268
 269     for (i=0; i < NUM_KEYS && (key_found<0) ; i++) {
 270         key[0] = tea_keytable[i].key[0];
 271         key[1] = tea_keytable[i].key[1];
 272         key[2] = tea_keytable[i].key[2];
 273         key[3] = tea_keytable[i].key[3];
 274
 275         /* Now increment the key */
 276         for(j=0; j<((magic_location-mi4header->plaintext)/8); j++){
 277             key[0]++;
 278             if (key[0]==0) {
 279                 key[1]++;
 280                 if (key[1]==0) {
 281                     key[2]++;
 282                     if (key[2]==0) {
 283                         key[3]++;
 284                     }
 285                 }
 286             }
 287         }
 288
 289         if (tea_test_key(magic_enc,key,unaligned))
 290         {
 291             key_found = i;
 292             printf("%s...found", tea_keytable[i].name);
 293         } else {
 294            /* printf("%s...failed", tea_keytable[i].name); */
 295         }
 296     }
 297
 298     return key_found;
 299 }
 300
 301
 302 /* Load mi4 format firmware image */
 303 int load_mi4(unsigned char* buf, char* firmware, unsigned int buffer_size)
 304 {
 305     int fd;
 306     struct mi4header_t mi4header;
 307     int rc;
 308     unsigned long sum;
 309     char filename[MAX_PATH];
 310
 311     snprintf(filename,sizeof(filename), BOOTDIR "/%s",firmware);
 312     fd = open(filename, O_RDONLY);
 313     if(fd < 0)
 314     {
 315         snprintf(filename,sizeof(filename),"/%s",firmware);
 316         fd = open(filename, O_RDONLY);
 317         if(fd < 0)
 318             return EFILE_NOT_FOUND;
 319     }
 320
 321     read(fd, &mi4header, MI4_HEADER_SIZE);
 322
 323     /* MI4 file size */
 324     printf("mi4 size: %x", mi4header.mi4size);
 325
 326     if ((mi4header.mi4size-MI4_HEADER_SIZE) > buffer_size)
 327         return EFILE_TOO_BIG;
 328
 329     /* CRC32 */
 330     printf("CRC32: %x", mi4header.crc32);
 331
 332     /* Rockbox model id */
 333     printf("Model id: %.4s", mi4header.model);
 334
 335     /* Read binary type (RBOS, RBBL) */
 336     printf("Binary type: %.4s", mi4header.type);
 337
 338     /* Load firmware file */
 339     lseek(fd, MI4_HEADER_SIZE, SEEK_SET);
 340     rc = read(fd, buf, mi4header.mi4size-MI4_HEADER_SIZE);
 341     if(rc < (int)mi4header.mi4size-MI4_HEADER_SIZE)
 342         return EREAD_IMAGE_FAILED;
 343
 344     /* Check CRC32 to see if we have a valid file */
 345     sum = chksum_crc32 (buf, mi4header.mi4size - MI4_HEADER_SIZE);
 346
 347     printf("Calculated CRC32: %x", sum);
 348
 349     if(sum != mi4header.crc32)
 350         return EBAD_CHKSUM;
 351
 352     if( (mi4header.plaintext + MI4_HEADER_SIZE) != mi4header.mi4size)
 353     {
 354         /* Load encrypted firmware */
 355         int key_index = tea_find_key(&mi4header, fd);
 356
 357         if (key_index < 0)
 358             return EINVALID_FORMAT;
 359
 360         /* Plaintext part is already loaded */
 361         buf += mi4header.plaintext;
 362
 363         /* Decrypt in-place */
 364         tea_decrypt_buf(buf, buf,
 365                         mi4header.mi4size-(mi4header.plaintext+MI4_HEADER_SIZE),
 366                         tea_keytable[key_index].key);
 367
 368         printf("%s key used", tea_keytable[key_index].name);
 369
 370         /* Check decryption was successfull */
 371         if(le2int(&buf[mi4header.length-mi4header.plaintext-4]) != 0xaa55aa55)
 372         {
 373             return EREAD_IMAGE_FAILED;
 374         }
 375     }
 376
 377     return EOK;
 378 }
 379
 380 #if (CONFIG_STORAGE & STORAGE_SD)
 381 /* Load mi4 firmware from a hidden disk partition */
 382 int load_mi4_part(unsigned char* buf, struct partinfo* pinfo,
 383                   unsigned int buffer_size, bool disable_rebuild)
 384 {
 385     struct mi4header_t mi4header;
 386     struct ppmi_header_t ppmi_header;
 387     unsigned long sum;
 388
 389     /* Read header to find out how long the mi4 file is. */
 390     storage_read_sectors(0, pinfo->start + PPMI_SECTOR_OFFSET,
 391                             PPMI_SECTORS, &ppmi_header);
 392
 393     /* The first four characters at 0x80000 (sector 1024) should be PPMI*/
 394     if( memcmp(ppmi_header.magic, "PPMI", 4) )
 395         return EFILE_NOT_FOUND;
 396
 397     printf("BL mi4 size: %x", ppmi_header.length);
 398
 399     /* Read mi4 header of the OF */
 400     storage_read_sectors(0, pinfo->start + PPMI_SECTOR_OFFSET + PPMI_SECTORS
 401                        + (ppmi_header.length/512), MI4_HEADER_SECTORS, &mi4header);
 402
 403     /* We don't support encrypted mi4 files yet */
 404     if( (mi4header.plaintext) != (mi4header.mi4size-MI4_HEADER_SIZE))
 405         return EINVALID_FORMAT;
 406
 407     /* MI4 file size */
 408     printf("OF mi4 size: %x", mi4header.mi4size);
 409
 410     if ((mi4header.mi4size-MI4_HEADER_SIZE) > buffer_size)
 411         return EFILE_TOO_BIG;
 412
 413     /* CRC32 */
 414     printf("CRC32: %x", mi4header.crc32);
 415
 416     /* Rockbox model id */
 417     printf("Model id: %.4s", mi4header.model);
 418
 419     /* Read binary type (RBOS, RBBL) */
 420     printf("Binary type: %.4s", mi4header.type);
 421
 422     /* Load firmware */
 423     storage_read_sectors(0, pinfo->start + PPMI_SECTOR_OFFSET + PPMI_SECTORS
 424                         + (ppmi_header.length/512) + MI4_HEADER_SECTORS,
 425                         (mi4header.mi4size-MI4_HEADER_SIZE)/512, buf);
 426
 427     /* Check CRC32 to see if we have a valid file */
 428     sum = chksum_crc32 (buf,mi4header.mi4size-MI4_HEADER_SIZE);
 429
 430     printf("Calculated CRC32: %x", sum);
 431
 432     if(sum != mi4header.crc32)
 433         return EBAD_CHKSUM;
 434
 435 #ifdef SANSA_E200
 436     if (disable_rebuild)
 437     {
 438         char block[512];
 439
 440         printf("Disabling database rebuild");
 441
 442         storage_read_sectors(0, pinfo->start + 0x3c08, 1, block);
 443         block[0xe1] = 0;
 444         storage_write_sectors(0, pinfo->start + 0x3c08, 1, block);
 445     }
 446 #else
 447     (void) disable_rebuild;
 448 #endif
 449
 450     return EOK;
 451 }
 452 #endif
 453
 454 void* main(void)
 455 {
 456     int i;
 457     int btn;
 458     int rc;
 459     int num_partitions;
 460     struct partinfo* pinfo;
 461 #if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200) \
 462     || defined (SANSA_VIEW)
 463 #if !defined(USE_ROCKBOX_USB)
 464     int usb_retry = 0;
 465 #endif
 466     bool usb = false;
 467 #else
 468     char buf[256];
 469     unsigned short* identify_info;
 470 #endif
 471
 472     chksum_crc32gentab ();
 473
 474     system_init();
 475     kernel_init();
 476
 477     lcd_init();
 478
 479     font_init();
 480     show_logo();
 481
 482     adc_init();
 483     button_init();
 484 #if defined(SANSA_E200) || defined(PHILIPS_SA9200)
 485     i2c_init();
 486     _backlight_on();
 487 #endif
 488
 489     if (button_hold())
 490     {
 491         verbose = true;
 492         lcd_clear_display();
 493         printf("Hold switch on");
 494         printf("Shutting down...");
 495         sleep(HZ);
 496         power_off();
 497     }
 498
 499     btn = button_read_device();
 500
 501     /* Enable bootloader messages if any button is pressed */
 502     if (btn) {
 503         lcd_clear_display();
 504         verbose = true;
 505     }
 506
 507 #if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200)
 508 #if !defined(USE_ROCKBOX_USB)
 509     usb_init();
 510     while (usb_drv_powered() && usb_retry < 5 && !usb)
 511     {
 512         usb_retry++;
 513         sleep(HZ/4);
 514         usb = (usb_detect() == USB_INSERTED);
 515     }
 516     if (usb)
 517         btn |= BOOTLOADER_BOOT_OF;
 518 #endif /* USE_ROCKBOX_USB */
 519 #endif
 520
 521     lcd_setfont(FONT_SYSFIXED);
 522
 523     printf("Rockbox boot loader");
 524     printf("Version: %s", version);
 525     printf(MODEL_NAME);
 526
 527     i=storage_init();
 528 #if !(CONFIG_STORAGE & STORAGE_SD)
 529     if (i==0) {
 530         identify_info=ata_get_identify();
 531         /* Show model */
 532         for (i=0; i < 20; i++) {
 533             ((unsigned short*)buf)[i]=htobe16(identify_info[i+27]);
 534         }
 535         buf[40]=0;
 536         for (i=39; i && buf[i]==' '; i--) {
 537             buf[i]=0;
 538         }
 539         printf(buf);
 540     } else {
 541         error(EATA, i);
 542     }
 543 #endif
 544
 545     disk_init(IF_MV(0));
 546     num_partitions = disk_mount_all();
 547     if (num_partitions<=0)
 548     {
 549         error(EDISK,num_partitions);
 550     }
 551
 552     /* Just list the first 2 partitions since we don't have any devices yet
 553        that have more than that */
 554     for(i=0; i<NUM_PARTITIONS; i++)
 555     {
 556         pinfo = disk_partinfo(i);
 557         printf("Partition %d: 0x%02x %ld MB",
 558                 i, pinfo->type, pinfo->size / 2048);
 559     }
 560
 561     /* Try loading Rockbox, if that fails, fall back to the OF */
 562     if((btn & BOOTLOADER_BOOT_OF) == 0)
 563     {
 564         printf("Loading Rockbox...");
 565         rc = load_mi4(loadbuffer, BOOTFILE, MAX_LOADSIZE);
 566         if (rc < EOK)
 567         {
 568             bool old_verbose = verbose;
 569             verbose = true;
 570             printf("Can't load " BOOTFILE ": ");
 571             printf(strerror(rc));
 572             verbose = old_verbose;
 573             btn |= BOOTLOADER_BOOT_OF;
 574             sleep(5*HZ);
 575         }
 576         else
 577             return (void*)loadbuffer;
 578     }
 579
 580     if(btn & BOOTLOADER_BOOT_OF)
 581     {
 582         /* Load original mi4 firmware in to a memory buffer called loadbuffer.
 583            The rest of the loading is done in crt0.S.
 584            1) First try reading from the hidden partition (on Sansa only).
 585            2) Next try a decrypted mi4 file in /System/OF.mi4
 586            3) Finally, try a raw firmware binary in /System/OF.bin. It should be
 587               a mi4 firmware decrypted and header stripped using mi4code.
 588         */
 589         printf("Loading original firmware...");
 590
 591 #if (CONFIG_STORAGE & STORAGE_SD)
 592         /* First try a (hidden) firmware partition */
 593         printf("Trying firmware partition");
 594         pinfo = disk_partinfo(1);
 595         if(pinfo->type == PARTITION_TYPE_OS2_HIDDEN_C_DRIVE)
 596         {
 597             rc = load_mi4_part(loadbuffer, pinfo, MAX_LOADSIZE, usb);
 598             if (rc < EOK) {
 599                 printf("Can't load from partition");
 600                 printf(strerror(rc));
 601             } else {
 602                 return (void*)loadbuffer;
 603             }
 604         } else {
 605             printf("No hidden partition found.");
 606         }
 607 #endif
 608
 609 #if defined(PHILIPS_HDD1630) || defined(PHILIPS_HDD6330)
 610         printf("Trying /System/OF.ebn");
 611         rc=load_mi4(loadbuffer, "/System/OF.ebn", MAX_LOADSIZE);
 612         if (rc < EOK) {
 613             printf("Can't load /System/OF.ebn");
 614             printf(strerror(rc));
 615         } else {
 616             return (void*)loadbuffer;
 617         }
 618 #endif
 619
 620         printf("Trying /System/OF.mi4");
 621         rc=load_mi4(loadbuffer, "/System/OF.mi4", MAX_LOADSIZE);
 622         if (rc < EOK) {
 623             printf("Can't load /System/OF.mi4");
 624             printf(strerror(rc));
 625         } else {
 626 #if defined(SAMSUNG_YH925)
 627             lcd_reset();
 628 #endif
 629             return (void*)loadbuffer;
 630         }
 631
 632         printf("Trying /System/OF.bin");
 633         rc=load_raw_firmware(loadbuffer, "/System/OF.bin", MAX_LOADSIZE);
 634         if (rc < EOK) {
 635             printf("Can't load /System/OF.bin");
 636             printf(strerror(rc));
 637         } else {
 638 #if defined(SAMSUNG_YH925)
 639             lcd_reset();
 640 #endif
 641             return (void*)loadbuffer;
 642         }
 643
 644         error(0, 0);
 645     }
 646     return (void*)loadbuffer;
 647 }